Health Timeline
Visualize probe history, latency trends, and uptime with the server health timeline.
Health Timeline
The server detail page includes two health visualizations: the timeline chart and the uptime calendar.
Timeline chart
A time-series chart of probe latency over the last 30 days, color-coded by status:
- Green points — healthy responses
- Yellow points — degraded (slow) responses
- Red points — down or error responses
Hover over any point to see the exact timestamp, latency, and error message (if any).
Uptime calendar
A GitHub-style heatmap showing one square per day over the last 90 days. Color intensity indicates availability:
- Dark green — 100% uptime that day
- Light green — mostly up with some degradation
- Red — at least one down event
- Grey — no probes run that day
This gives a quick "at a glance" view of reliability trends.
Interpreting the data
A single down event doesn't necessarily mean the server was truly unreachable — it could be a transient network blip or a brief restart. Look for patterns:
- Recurring downs at the same time of day → scheduled restarts or traffic spikes
- Steadily increasing latency → resource contention on the server
- Degraded but not down → the server is responding but slowly
Navigating to the timeline
- Go to Servers
- Click any server row
- The Health tab is shown by default with the timeline and calendar